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Problems

195 problems

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Array70Database51Dynamic Programming26String25Math22Depth-First Search18Hash Table16Graph15Binary Search14Breadth-First Search12Heap (Priority Queue)12Sorting12Tree12Greedy10Matrix10All topics

Hard · Premium · 195 results

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TitleSolutionAcceptDifficultyTopics
1199. Minimum Time to Build BlocksVideoPremium
Solution49.2%Hard
Array, Greedy +2· 1 company
1216. Valid Palindrome IIIVideoPremium
Solution49.2%Hard
Dynamic Programming, String· 3 companies
1225. Report Contiguous DatesVideoPremium
Solution56.9%Hard
Database· 2 companies
1231. Divide ChocolateVideoPremium
Solution60.5%Hard
Array, Binary Search· 1 company
1246. Palindrome RemovalVideoPremium
Solution46.4%Hard
Array, Dynamic Programming· 1 company
1259. Handshakes That Don't CrossVideoPremium
Solution61.1%Hard
Dynamic Programming, Math· 1 company
1274. Number of Ships in a RectangleVideoPremium
Solution68.7%Hard
Array, Divide and Conquer +1· 2 companies
1336. Number of Transactions per VisitVideoPremium
Solution47.7%Hard
Database· 2 companies
1369. Get the Second Most Recent ActivityVideoPremium
Solution67.5%Hard
Database· 1 company
1384. Total Sales Amount by YearVideoPremium
Solution61.0%Hard
Database
1412. Find the Quiet Students in All ExamsVideoPremium
Solution58.0%Hard
Database
1479. Sales by Day of the WeekVideoPremium
Solution76.1%Hard
Database· 1 company
1516. Move Sub-Tree of N-Ary TreeVideoPremium
–59.7%Hard
Depth-First Search, Tree· 1 company
1548. The Most Similar Path in a GraphVideoPremium
Solution59.2%Hard
Dynamic Programming, Graph· 1 company
1597. Build Binary Expression Tree From Infix ExpressionVideoPremium
–62.5%Hard
Binary Tree, Stack +2· 1 company
1635. Hopper Company Queries IVideoPremium
Solution47.7%Hard
Database· 1 company
1645. Hopper Company Queries IIVideoPremium
Solution39.9%Hard
Database· 1 company
1651. Hopper Company Queries IIIVideoPremium
Solution65.6%Hard
Database· 1 company
1692. Count Ways to Distribute CandiesVideoPremium
Solution62.7%Hard
Dynamic Programming· 1 company
1714. Sum Of Special Evenly-Spaced Elements In ArrayVideoPremium
Solution49.9%Hard
Array, Dynamic Programming· 1 company
1724. Checking Existence of Edge Length Limited Paths IIVideoPremium
Solution51.2%Hard
Graph, Minimum Spanning Tree +1· 2 companies
1767. Find the Subtasks That Did Not ExecuteVideoPremium
Solution78.0%Hard
Database· 1 company
1788. Maximize the Beauty of the GardenVideoPremium
Solution62.8%Hard
Array, Greedy +2· 1 company
1842. Next Palindrome Using Same DigitsVideoPremium
Solution54.2%Hard
String, Two Pointers· 1 company
1892. Page Recommendations IIVideoPremium
Solution46.0%Hard
Database· 1 company
1917. Leetcodify Friends RecommendationsVideoPremium
Solution29.0%Hard
Database· 1 company
1919. Leetcodify Similar FriendsVideoPremium
Solution43.5%Hard
Database· 1 company
1924. Erect the Fence IIVideoPremium
–49.4%Hard
Array, Geometry +1· 1 company
1956. Minimum Time For K Virus Variants to SpreadVideoPremium
–49.5%Hard
Array, Binary Search +3
1972. First and Last Call On the Same DayVideoPremium
Solution50.7%Hard
Database· 1 company
2004. The Number of Seniors and Juniors to Join the CompanyVideoPremium
Solution46.6%Hard
Database
2005. Subtree Removal Game with Fibonacci TreeVideoPremium
–54.9%Hard
Binary Tree, Dynamic Programming +3· 1 company
2010. The Number of Seniors and Juniors to Join the Company IIVideoPremium
Solution66.2%Hard
Database
2118. Build the EquationVideoPremium
Solution57.3%Hard
Database
2123. Minimum Operations to Remove Adjacent Ones in MatrixVideoPremium
Solution42.5%Hard
Array, Graph +1· 1 company
2143. Choose Numbers From Two Arrays in RangePremium
Solution51.4%Hard
Array, Dynamic Programming· 1 company
2153. The Number of Passengers in Each Bus IIVideoPremium
Solution40.6%Hard
Database
2158. Amount of New Area Painted Each DayVideoPremium
Solution55.3%Hard
Array, Ordered Set +1· 2 companies
2173. Longest Winning StreakVideoPremium
Solution54.7%Hard
Database· 1 company
2199. Finding the Topic of Each PostVideoPremium
Solution50.6%Hard
Database· 1 company
2204. Distance to a Cycle in Undirected GraphVideoPremium
Solution73.4%Hard
Breadth-First Search, Depth-First Search +2· 2 companies
2247. Maximum Cost of Trip With K HighwaysPremium
Solution50.2%Hard
Bit Manipulation, Bitmask +2
2252. Dynamic Pivoting of a TablePremium
Solution57.8%Hard
Database
2253. Dynamic Unpivoting of a TablePremium
Solution69.8%Hard
Database
2254. Design Video Sharing PlatformVideoPremium
–64.1%Hard
Design, Hash Table +2· 1 company
2263. Make Array Non-decreasing or Non-increasingVideoPremium
Solution64.7%Hard
Dynamic Programming, Greedy· 2 companies
2277. Closest Node to Path in TreeVideoPremium
–62.1%Hard
Array, Breadth-First Search +2· 1 company
2307. Check for Contradictions in EquationsVideoPremium
Solution43.8%Hard
Array, Depth-First Search +2· 2 companies
2313. Minimum Flips in Binary Tree to Get ResultVideoPremium
Solution56.9%Hard
Binary Tree, Depth-First Search +2· 1 company
2355. Maximum Number of Books You Can TakeVideoPremium
Solution40.9%Hard
Array, Dynamic Programming +2· 1 company
Showing 51–100 of 195